396 The Philippine Journal of Science 1921 
TABLE 1.—Mean temperature for ten years, 1909-1918, at Bangkok, Siam. 
*C. 
January 25.2 
February 27.4 
March 29.1 
April 30.7 
May 29.8 
June 29.1 
July 28.8 
August : 28.5 
September 28.1 
October py Bg 
November 26.6 
December 25.1 
Mean for ten years 28.0 
TABLE 2.—Mean daily range of temperature for ten years, 1909-1918, at 
Bangkok, Siam. 
*©; 
January 13.2 
February Ti.2 
March 10.3 
April 10.3 
May 9.7 
June 8.6 
July 8.2 
- August 8.1 
September Wt 
October 7.4 
November 7.9 
December 9.9 
Mean for ten years 9.3 
TABLE 3.—Mean solar radiation for ten years, 1909-1918, at Bangkok, Siam. 
$6; 
January 58.9 
February 61.3 
March 63.7 
April 65.7 
May 65.7 
June 64.6 
July ° 65.9 
August 63.8 
September 63.3 
October 62.1 
November 60.4 
December 59.1 
Mean for ten years 62.7 
